And now it came to pass that the people of Nephi ... began to ... indulge themselves somewhat in wicked practices, such as like unto David of old desiring many wives and concubines. 1:15
"If I will, saith the Lord of Hosts, raise up seed unto me,
I will command my people; otherwise they shall hearken unto these things."
Notice that Jacob condemned polygamy, except when the Lord wants his people "to raise up seed unto" him.
to justify
,
along with his .
2:30
"We keep the law of Moses."
Since the Nephites obeyed all the Old Testament laws, shouldn't modern Mormons?"
4:5